Patent US3139408A successfully refreshed from Google Patents.
US3139408A
Expired / Lapsed
US
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Process for preparing raney nickel catalyst
Assignee: Individual
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Filing: 1961-12-21
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Granted: 1964-06-30
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Huseyin V Tumer
- 👤 Edwin R Cousins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:43
CPC Classifications
B; B01; B01J; B01J25/00; B01J25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR PREPARING AN IMPROVED HYDROGENATION CATALYST FROM A RANY NICKEL-ALUMINUM ALLOY WHICH IMPROVED HYDROGENATION CATALYST EXHIBITS ENHANCED AND UNIFORM CATALYTIC ACTIVITY AND IS CAPABLE OF REUSE WITHOUT LOSS OF CATALYTIC ACTIVITY, COMPRISING THE FOLLOWING STEPS; (A) DIGESTING A RAMEY NICKEL-AMUMINUM ALLOY IN ALKALI, (B) WASHING THE DIGESTED PRODUCT FREE FROM ALKALI WITH WITH WATER, (C) TREATING THE DIGESTED AND WASHED PRODUCT OF STEP (B) IN SUSPENSION FIRST WITH A REAGENT THAT IS A PROTON ACCEPTOR AND SUBSEQUENTLY WITH A REAGENT THAT IS A PROTON DONOR, (D) WASHING THE TREATED PRODUCT OF STEP (C) FREE FROM THE TREATING REAGENTS WITH WATER.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PREPARING AN IMPROVED HYDROGENATION CATALYST FROM A RANY NICKEL-ALUMINUM ALLOY WHICH IMPROVED HYDROGENATION CATALYST EXHIBITS ENHANCED AND UNIFORM CATALYTIC ACTIVITY AND IS CAPABLE OF REUSE WITHOUT LOSS OF CATALYTIC ACTIVITY, COMPRISING THE FOLLOWING STEPS; (A) DIGESTING A RAMEY NICKEL-AMUMINUM ALLOY IN ALKALI, (B) WASHING THE DIGESTED PRODUCT FREE FROM ALKALI WITH WITH WATER, (C) TREATING THE DIGESTED AND WASHED PRODUCT OF STEP (B) IN SUSPENSION FIRST WITH A REAGENT THAT IS A PROTON ACCEPTOR AND SUBSEQUENTLY WITH A REAGENT THAT IS A PROTON DONOR, (D) WASHING THE TREATED PRODUCT OF STEP (C) FREE FROM THE TREATING REAGENTS WITH WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |